Home / 43,615.38-65,337.86-20,786.75

Finding the Fourth Proportional to 43,615.38, 65,337.86 and 20,786.75

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Solution

The fourth proportional to 43,615.38, 65,337.86 and 20,786.75 is: 31,139.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,615.38 : 65,337.86 = 20,786.75 : x
  2. Step 2: Convert to fraction form
    43,615.38/65,337.86 = 20,786.75/x
  3. Step 3: Cross multiply
    43,615.38x = 65,337.86 × 20,786.75
  4. Step 4: Simplify right side
    43,615.38x = 1,358,161,330.73
  5. Step 5: Solve for x
    x = 1,358,161,330.73/43,615.38
  6. Step 6: Final answer
    x = 31,139.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.